fx 8350 drops to 1375mhz full load

[wildgg]

my friend is running fx 8350 on stock 4ghz with msi gtx 960 gaming G2 on a ASRock 970 Extreme3 R2.0 and a Cooler Master B500 PSU

when he's gaming most of the time it goes fine but when he tries to stream his cpu starting to drop to 1375MHZ and all cores goes to 100% load.

i'm thinking it's the PSU just being to weak for this build but i'm not sure.

 

i like to know what you guys think and what might be the problem.

 

thx in advance

 

[Majestic]

Temperatures? 

 

Sounds like thermal throttle in either the CPU or VRM's. That board has a pretty weak VRM for the 8350.

[sof006]

 

my friend is running fx 8350 on stock 4ghz with msi gtx 960 gaming G2 on a ASRock 970 Extreme3 R2.0 and a Cooler Master B500 PSU

when he's gaming most of the time it goes fine but when he tries to stream his cpu starting to drop to 1375MHZ and all cores goes to 100% load.

i'm thinking it's the PSU just being to weak for this build but i'm not sure.

 

i like to know what you guys think and what might be the problem.

 

thx in advance

 

 

Temperatures on the 8350?

 

Sounds like thermal throttling to me.

 

EDIT: Also yes about the VRM not being able to supply enough juice to the CPU

 

At least a 6+2 or 8+2 Phase VRM is my recommendation 

 

Also I used to own a 8150 that did the same thing until I reduced heat output and changed the motherboard to one that was capable of supplying more power.

[Lord_Karango17]

500w should be enough for that system.

 

Ask him to run a cpu intensive program like aida64/ cinnebench and report back if the cpu clock drops, or if it only drops when the gpu is also active.

[wildgg]

Temperatures on the cpu never went above 60C, il let him check the vrm's and let him stress test the system.

and he also thought it might be the motherboard,

 

if it turns out it's the motherboard, what do you recomment for a better motherboard for as cheap as posible?

 

thx

[Lotus]

Sounds like the motherboard just doesn't have beefy enough VRMs (voltage regulator modules) to supply power to the CPU.

 

The cheapest motherboard with VRMs good enough to reliably drive an 8 core FX CPU (that isn't a gimped E model) is the Gigabyte GA-970A-UD3P (and only the UD3P version), although if you're considering replacement it might be time for a platform swap as the FX-8350 is not ideal for gaming.

[Majestic]

if it turns out it's the motherboard, what do you recomment for a better motherboard for as cheap as posible?

 

Gigabyte 970A-UD3P or Gigabyte 990FXA-UD3 

 

Yeah, these are the hidding costs with AMD. 

[Ihaveswag]

The PSU is totally fine with his build, its either CPU temp throttling or the VRMs are running into issues, because you should have a 990fx mobo for an fx 8350 according to AMDs webpage!

[Clyne]

Turnoff turbocore?

That's a feature that's based on usage with volts/clocks. 

[wildgg]

Turnoff turbocore?

That's a feature that's based on usage with volts/clocks. 

it is turned off

[Majestic]

The PSU is totally fine with his build, its either CPU temp throttling or the VRMs are running into issues, because you should have a 990fx mobo for an fx 8350 according to AMDs webpage!

 

That's misleading, not all 990FX boards have 8+2.

 

Gigabyte 970A-UD3P or Gigabyte 990FXA-UD3  are the cheapest alternatives that should be able to run it without throttling.

[wildgg]

update:

 

so we tested the pc with cinnebench and the cpu never dropped once, same with aida64 no drops what so ever.

streaming on 30fps actually works fine, and we're testing more right now.

note: he installed W10 now and everything works already much better.